The Constitution of 1839 (effective 1839-1855) provides for the exercise of supreme executive power by a citizen with the title of Presidente de la República ("Art. 68. Es Jefe Supremo del Poder Ejecutivo el ciudadano nombrado Presidente de la república.")

[2]

Jefe Supremo de la República (in dissidence)

4 Jan 1841 - 7 Apr 1841 Manuel Ignacio de Vivanco e Iturralde

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Continues from 13 Jul 1841 when he began to exercise the functions of Presidente de la República for the period of absence of the incumbent.

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His parents' family names are Vidal and La Hoz; they are recorded as Bidal Laos in his baptismal record, as they also appear in that of his sibling; the misspellings are common. He signed Francisco de Vidal.